module Mux2To1_4 (
	input sel,
	input [3:0] a,
	input [3:0] b,
	output [3:0] out
);
	Mux2To1 mux0 (.sel(sel), .a(a[0]), .b(b[0]), .out(out[0]));
	Mux2To1 mux1 (.sel(sel), .a(a[1]), .b(b[1]), .out(out[1]));
	Mux2To1 mux2 (.sel(sel), .a(a[2]), .b(b[2]), .out(out[2]));
	Mux2To1 mux3 (.sel(sel), .a(a[3]), .b(b[3]), .out(out[3]));
endmodule
